Unlocked devices should have nonnormal DICE chains

Adds a test that checks two system properties for an indication that the
device is unlocked. If the DICE chain is not degenerate, then the test
checks that the mode on the leaf certificate in the DICE chain is not
normal.

Test: atest VtsHalRemotelyProvisionedComponentTargetTest
      atest libkeymint_remote_prov_support_test
Bug: 377829077
Change-Id: I65a9845f32d673833ccd2993d59f9ed899d2da11